<template>
  <view class="chat-page">
    <!-- 顶部导航 -->
    <view class="chat-header">
      <view class="header-left" @click="goBack">
        <text class="icon-back">←</text>
      </view>
      <view class="header-center">
        <text class="chat-title">{{ targetUserName }}</text>
        <text class="online-status" :class="{ online: isTargetOnline }">
          {{ isTargetOnline ? '在线' : '离线' }}
        </text>
      </view>
      <view class="header-right">
        <text class="icon-more">⋯</text>
      </view>
    </view>

    <!-- 消息列表 -->
    <scroll-view 
      class="message-list" 
      scroll-y 
      :scroll-into-view="scrollToView"
      @scrolltoupper="loadMoreMessages">
      
      <!-- 加载更多提示 -->
      <view v-if="loading" class="loading-tip">加载中...</view>
      <view v-else-if="noMore" class="loading-tip">没有更多消息了</view>

      <!-- 时间分组和消息项 -->
      <view v-for="(msg, index) in messages" :key="msg.messageId">
        <!-- 时间分隔线 (每5分钟显示一次) -->
        <view v-if="shouldShowTime(msg, index)" class="time-divider">
          <text class="time-text">{{ formatMessageTime(msg.sendTime) }}</text>
        </view>
        
        <!-- 消息项 -->
        <view 
          :id="'msg-' + index"
          class="message-item"
          :class="{ 'message-self': msg.fromUserId === userId }"
          @longpress="showMessageMenu(msg, index)">
          
          <!-- 头像 -->
          <image 
            class="avatar" 
            :src="msg.fromUserId === userId ? userAvatar : targetUserAvatar" 
            mode="aspectFill" />
          
          <!-- 消息内容 -->
          <view class="message-content-wrapper">
            <!-- 用户名（对方消息时显示） -->
            <text v-if="msg.fromUserId !== userId" class="message-name">
              {{ msg.fromUserName }}
            </text>
            
            <!-- 消息气泡 -->
            <view 
              class="message-bubble" 
              :class="{ 'bubble-self': msg.fromUserId === userId, 'bubble-failed': msg.sendStatus === 4 }"
              @click="handleMessageClick(msg)">
              <!-- 文本消息 -->
              <text v-if="msg.messageType === 1" class="message-text">
                {{ msg.content }}
              </text>
              
              <!-- 图片消息 -->
              <image 
                v-else-if="msg.messageType === 2"
                class="message-image"
                :src="msg.mediaUrl"
                mode="widthFix"
                lazy-load
                @click.stop="previewImage(msg.mediaUrl)" />
              
              <!-- 语音消息 -->
              <view v-else-if="msg.messageType === 3" class="message-voice" @click.stop="playVoice(msg)">
                <text>🔊</text>
                <text>{{ msg.duration }}"</text>
              </view>
              
              <!-- 视频消息 -->
              <video 
                v-else-if="msg.messageType === 4"
                class="message-video"
                :src="msg.mediaUrl"
                controls />
              
              <!-- 撤回消息 -->
              <text v-if="msg.isRecalled" class="message-recalled">
                消息已撤回
              </text>
            </view>
            
            <!-- 消息状态（自己的消息） -->
            <view v-if="msg.fromUserId === userId" class="message-status">
              <text v-if="msg.sendStatus === 1" class="sending">发送中...</text>
              <text v-else-if="msg.sendStatus === 2">已送达</text>
              <text v-else-if="msg.sendStatus === 3" class="read">已读</text>
              <view v-else-if="msg.sendStatus === 4" class="failed-group">
                <text class="failed">发送失败</text>
                <text class="retry-btn" @click.stop="retryMessage(msg)">重试</text>
              </view>
            </view>
          </view>
        </view>
      </view>
    </scroll-view>

    <!-- 输入框 -->
    <view class="input-bar">
      <!-- 语音按钮 -->
      <view class="input-icon" @click="switchInputType">
        <text>{{ inputType === 'text' ? '🎤' : '⌨️' }}</text>
      </view>
      
      <!-- 文本输入 -->
      <input 
        v-if="inputType === 'text'"
        class="input-field"
        v-model="inputText"
        placeholder="说点什么..."
        confirm-type="send"
        @confirm="sendTextMessage"
        @input="onInputChange" />
      
      <!-- 语音按钮 -->
      <button 
        v-else
        class="voice-button"
        @touchstart="startVoiceRecord"
        @touchend="stopVoiceRecord">
        按住说话
      </button>
      
      <!-- 表情按钮 -->
      <view class="input-icon" @click="showEmojiPanel = !showEmojiPanel">
        <text>😊</text>
      </view>
      
      <!-- 更多按钮 -->
      <view class="input-icon" @click="showMorePanel = !showMorePanel">
        <text>➕</text>
      </view>
    </view>

    <!-- 表情面板 -->
    <view v-if="showEmojiPanel" class="emoji-panel">
      <text 
        v-for="emoji in emojis" 
        :key="emoji"
        class="emoji-item"
        @click="insertEmoji(emoji)">
        {{ emoji }}
      </text>
    </view>

    <!-- 更多功能面板 -->
    <view v-if="showMorePanel" class="more-panel">
      <view class="more-item" @click="chooseImage">
        <view class="more-icon">🖼️</view>
        <text class="more-text">图片</text>
      </view>
      <view class="more-item" @click="chooseVideo">
        <view class="more-icon">📹</view>
        <text class="more-text">视频</text>
      </view>
      <view class="more-item" @click="chooseFile">
        <view class="more-icon">📁</view>
        <text class="more-text">文件</text>
      </view>
    </view>
    
    <!-- 消息操作菜单 -->
    <view v-if="showMessageAction" class="message-action-mask" @click="hideMessageMenu">
      <view class="message-action-menu" @click.stop>
        <view class="menu-item" @click="copyMessage" v-if="selectedMessage && selectedMessage.messageType === 1">
          <text class="menu-icon">📋</text>
          <text>复制</text>
        </view>
        <view class="menu-item" @click="recallMessage" v-if="selectedMessage && selectedMessage.fromUserId === userId && canRecall(selectedMessage)">
          <text class="menu-icon">↩️</text>
          <text>撤回</text>
        </view>
        <view class="menu-item" @click="deleteMessage">
          <text class="menu-icon">🗑️</text>
          <text>删除</text>
        </view>
        <view class="menu-item cancel" @click="hideMessageMenu">
          <text>取消</text>
        </view>
      </view>
    </view>
  </view>
</template>

<script>
import timManager from '@/utils/tim-manager.js';
import TIM from 'tim-wx-sdk';

export default {
  data() {
    return {
      userId: null,
      userAvatar: '',
      targetUserId: null,
      targetUserName: '',
      targetUserAvatar: '',
      
      messages: [],
      inputText: '',
      inputType: 'text',
      conversationID: '',
      
      scrollToView: '',
      showEmojiPanel: false,
      showMorePanel: false,
      
      isLogin: false,
      
      // 消息操作菜单
      showMessageAction: false,
      selectedMessage: null,
      selectedMessageIndex: -1,
      menuTop: 0,
      
      // 加载更多
      loading: false,
      noMore: false,
      nextReqMessageID: '',
      isTargetOnline: false,
      
      emojis: ['😀', '😃', '😄', '😁', '😆', '😅', '😂', '🤣', '😊', '😇', '🙂', '🙃', '😉', '😌', '😍', '🥰', '😘', '😗', '😙', '😚', '😋', '😛', '😝', '😜', '🤪', '🤨', '🧐', '🤓', '😎', '🤩', '🥳']
    };
  },
  
  async onLoad(options) {
    console.log('=== 聊天页面加载 ===');
    
    // 严格验证登录状态
    const token = uni.getStorageSync('token');
    const userInfo = uni.getStorageSync('userInfo');
    const storedUserId = uni.getStorageSync('userId');
    
    console.log('登录状态检查:');
    console.log('- token:', token ? '存在' : '不存在');
    console.log('- userInfo:', userInfo);
    console.log('- storedUserId:', storedUserId);
    
    if (!token || !userInfo) {
      console.error('❌ 未登录或登录信息不完整');
      uni.showModal({
        title: '需要登录',
        content: '请先登录后再进行聊天',
        showCancel: false,
        success: () => {
          uni.reLaunch({
            url: '/pages/page3/page3'
          });
        }
      });
      return;
    }
    
    // 优先使用 storage 中的 userId，确保一致性
    let rawUserId = storedUserId || userInfo.userId || userInfo.id || userInfo.user_id;
    
    // 转换为数字类型（确保与消息列表页面一致）
    if (typeof rawUserId === 'string') {
      rawUserId = parseInt(rawUserId);
    }
    
    if (!rawUserId || isNaN(rawUserId)) {
      console.error('❌ 无法获取有效的用户ID');
      uni.showModal({
        title: '用户信息错误',
        content: '无法获取用户ID，请重新登录',
        showCancel: false,
        success: () => {
          uni.removeStorageSync('token');
          uni.removeStorageSync('userInfo');
          uni.removeStorageSync('userId');
          uni.reLaunch({
            url: '/pages/page3/page3'
          });
        }
      });
      return;
    }
    
    // 保存用户ID（TIM需要字符串格式）
    this.userId = String(rawUserId);
    this.userAvatar = userInfo.avatar || userInfo.avatarUrl || '/static/default-avatar.svg';
    
    // 获取对方用户信息（确保是字符串格式）
    this.targetUserId = String(options.targetUserId);
    this.targetUserName = decodeURIComponent(options.targetUserName || '用户');
    this.targetUserAvatar = decodeURIComponent(options.targetUserAvatar || '/static/default-avatar.svg');
    
    // 生成会话 ID
    this.conversationID = `C2C${this.targetUserId}`;
    
    console.log('✅ 聊天页面初始化成功:');
    console.log('   - 当前用户ID:', rawUserId, '(TIM格式:', this.userId, ')');
    console.log('   - 对方用户ID:', this.targetUserId);
    console.log('   - 会话ID:', this.conversationID);
    
    // 初始化 TIM
    await this.initTIM();
    
    // 等待 SDK Ready 后再加载消息
    await this.waitForSDKReady();
    
    // 加载历史消息
    await this.loadMessages();
    
    // 监听新消息
    this.listenMessages();
  },
  
  onUnload() {
    // 页面卸载时移除监听
    timManager.offMessage(this.handleNewMessage);
  },
  
  methods: {
    /**
     * 初始化 TIM
     */
    async initTIM() {
      try {
        // 如果未初始化，先初始化
        if (!timManager.tim) {
          timManager.init(1600109674);  // ✅ 已更新为正确的 SDKAppID
        }
        
        // 如果未登录，获取 userSig 并登录
        if (!timManager.isLogin) {
          // 先导入当前用户和目标用户到腾讯云IM
          await this.importUsers();
          
          // 从后端获取 userSig
          const userSig = await this.getUserSig();
          await timManager.login(this.userId, userSig);
        }
        
        this.isLogin = true;
        console.log('✅ TIM 初始化完成');
      } catch (error) {
        console.error('❌ TIM 初始化失败:', error);
        uni.showToast({
          title: '连接失败，请重试',
          icon: 'none'
        });
      }
    },
    
    /**
     * 导入用户到腾讯云IM
     */
    async importUsers() {
      try {
        console.log('📥 开始导入用户到腾讯云IM...');
        
        // 导入当前用户
        await uni.request({
          url: 'http://localhost:1004/api/im/importUser',
          method: 'POST',
          data: {
            userId: this.userId,
            nickname: this.userAvatar ? '用户' + this.userId : undefined
          }
        });
        
        // 导入目标用户
        await uni.request({
          url: 'http://localhost:1004/api/im/importUser',
          method: 'POST',
          data: {
            userId: this.targetUserId,
            nickname: this.targetUserName
          }
        });
        
        console.log('✅ 用户导入成功');
      } catch (error) {
        console.log('⚠️ 用户导入失败（可能已存在）:', error);
        // 导入失败不影响登录，因为用户可能已经存在
      }
    },
    
    /**
     * 获取 UserSig
     */
    async getUserSig() {
      try {
        const [err, res] = await uni.request({
          url: 'http://localhost:1004/api/im/getUserSig',
          method: 'GET',
          data: {
            userId: this.userId
          }
        });
        
        if (err) {
          throw new Error('请求失败');
        }
        
        if (res.data && res.data.code === 200) {
          return res.data.data.userSig;
        } else {
          throw new Error('获取 UserSig 失败');
        }
      } catch (error) {
        console.error('❌ 获取 UserSig 失败:', error);
        throw error;
      }
    },
    
    /**
     * 等待 SDK Ready
     */
    async waitForSDKReady() {
      return new Promise((resolve) => {
        // 如果已经 ready，立即返回
        if (timManager.isLogin) {
          console.log('✅ SDK 已就绪');
          resolve();
          return;
        }
        
        // 否则等待 SDK ready 事件
        console.log('⏳ 等待 SDK 就绪...');
        const checkReady = setInterval(() => {
          if (timManager.isLogin) {
            console.log('✅ SDK 已就绪');
            clearInterval(checkReady);
            resolve();
          }
        }, 100); // 每 100ms 检查一次
        
        // 超时保护（10秒后强制继续）
        setTimeout(() => {
          console.log('⚠️ 等待 SDK 就绪超时，继续执行');
          clearInterval(checkReady);
          resolve();
        }, 10000);
      });
    },
    
    /**
     * 加载历史消息
     */
    async loadMessages() {
      try {
        const res = await timManager.tim.getMessageList({
          conversationID: this.conversationID,
          count: 20
        });
        
        const messageList = res.data.messageList;
        this.nextReqMessageID = res.data.nextReqMessageID;
        this.noMore = !res.data.isCompleted;
        
        // 转换为我们的消息格式
        this.messages = messageList.map(msg => this.convertMessage(msg));
        
        // 滚动到底部
        this.$nextTick(() => {
          this.scrollToBottom();
        });
        
        // 标记已读
        await timManager.setMessageRead(this.conversationID);
      } catch (error) {
        console.error('❌ 加载消息失败:', error);
      }
    },
    
    /**
     * 加载更多消息（上拉）
     */
    async loadMoreMessages() {
      if (this.loading || !this.nextReqMessageID) {
        return;
      }
      
      this.loading = true;
      
      try {
        const res = await timManager.tim.getMessageList({
          conversationID: this.conversationID,
          nextReqMessageID: this.nextReqMessageID,
          count: 20
        });
        
        const messageList = res.data.messageList;
        this.nextReqMessageID = res.data.nextReqMessageID;
        this.noMore = !res.data.isCompleted;
        
        // 转换并添加到消息列表前面
        const newMessages = messageList.map(msg => this.convertMessage(msg));
        this.messages = [...newMessages, ...this.messages];
        
      } catch (error) {
        console.error('❌ 加载更多消息失败:', error);
      } finally {
        this.loading = false;
      }
    },
    
    /**
     * 监听新消息
     */
    listenMessages() {
      const handleNewMessage = (messageList) => {
        messageList.forEach(msg => {
          // 只处理当前会话的消息
          if (msg.conversationID === this.conversationID) {
            this.messages.push(this.convertMessage(msg));
            this.$nextTick(() => {
              this.scrollToBottom();
            });
            
            // 标记已读
            timManager.setMessageRead(this.conversationID);
          }
        });
      };
      
      this.handleNewMessage = handleNewMessage;
      timManager.onMessage(handleNewMessage);
    },
    
    /**
     * 转换消息格式
     */
    convertMessage(timMsg) {
      return {
        messageId: timMsg.ID,
        fromUserId: timMsg.from,
        toUserId: timMsg.to,
        messageType: timMsg.type === TIM.TYPES.MSG_TEXT ? 1 : 2,
        content: timMsg.type === TIM.TYPES.MSG_TEXT ? timMsg.payload.text : '[图片]',
        mediaUrl: timMsg.type === TIM.TYPES.MSG_IMAGE ? timMsg.payload.imageInfoArray[0].url : '',
        sendStatus: timMsg.status === 'success' ? 2 : 1,
        sendTime: new Date(timMsg.time * 1000),
        isRecalled: timMsg.isRevoked,
        fromUserName: timMsg.from === this.userId ? '我' : this.targetUserName
      };
    },
    
    /**
     * 发送文本消息
     */
    async sendTextMessage() {
      if (!this.inputText.trim()) {
        return;
      }
      
      const content = this.inputText;
      this.inputText = '';
      
      try {
        const message = await timManager.sendTextMessage(this.targetUserId, content);
        
        // 添加到消息列表
        this.messages.push(this.convertMessage(message));
        this.scrollToBottom();
        
        console.log('✅ 消息发送成功');
        
        // 同步消息到MySQL数据库（双重保障）
        this.syncMessageToMySQL(message);
      } catch (error) {
        console.error('❌ 消息发送失败:', error);
        uni.showToast({
          title: '发送失败',
          icon: 'none'
        });
        // 失败时恢复输入框内容
        this.inputText = content;
      }
    },
    
    /**
     * 选择图片
     */
    chooseImage() {
      uni.chooseImage({
        count: 1,
        sizeType: ['compressed'],
        sourceType: ['album', 'camera'],
        success: async (res) => {
          const tempFilePath = res.tempFilePaths[0];
          
          try {
            uni.showLoading({ title: '发送中...' });
            
            const message = await timManager.sendImageMessage(this.targetUserId, tempFilePath);
            
            this.messages.push(this.convertMessage(message));
            this.scrollToBottom();
            
            uni.hideLoading();
            console.log('✅ 图片发送成功');
          } catch (error) {
            uni.hideLoading();
            console.error('❌ 图片发送失败:', error);
            uni.showToast({
              title: '发送失败',
              icon: 'none'
            });
          }
        }
      });
      
      this.showMorePanel = false;
    },
    
    /**
     * 输入框内容变化
     */
    onInputChange() {
      // 腾讯云 IM 可以实现正在输入状态，这里暂时省略
      console.log('输入中...');
    },
    
    /**
     * 同步消息到MySQL数据库（双重存储保障）
     */
    async syncMessageToMySQL(timMessage) {
      try {
        console.log('🔄 同步消息到MySQL...', timMessage.ID);
        
        // 构建同步参数
        const syncData = {
          messageId: timMessage.ID,
          fromUserId: timMessage.from,
          toUserId: timMessage.to,
          messageType: this.getMessageType(timMessage),
          content: this.getMessageContent(timMessage),
          sendTime: timMessage.time  // TIM返回的是秒级时间戳
        };
        
        // 如果是图片消息，添加媒体信息
        if (timMessage.type === 'TIMImageElem' && timMessage.payload.imageInfoArray) {
          const imageInfo = timMessage.payload.imageInfoArray[0];
          syncData.mediaUrl = imageInfo.imageUrl;
          syncData.thumbnailUrl = imageInfo.imageUrl;
        }
        
        // 调用后端同步接口
        const res = await uni.request({
          url: 'http://localhost:1004/api/chat/syncTIMMessage',
          method: 'POST',
          data: syncData,
          header: {
            'Content-Type': 'application/json'
          }
        });
        
        if (res[1].data.code === 200) {
          console.log('✅ 消息已同步到MySQL:', timMessage.ID);
        } else {
          console.warn('⚠️ 消息同步失败:', res[1].data.message);
        }
      } catch (error) {
        console.error('❌ 同步消息到MySQL失败:', error);
        // 同步失败不影响聊天功能，只记录日志
      }
    },
    
    /**
     * 获取消息类型
     */
    getMessageType(timMessage) {
      const typeMap = {
        'TIMTextElem': 1,      // 文本
        'TIMImageElem': 2,     // 图片
        'TIMSoundElem': 3,     // 语音
        'TIMVideoFileElem': 4, // 视频
        'TIMFileElem': 5       // 文件
      };
      return typeMap[timMessage.type] || 1;
    },
    
    /**
     * 获取消息内容
     */
    getMessageContent(timMessage) {
      switch (timMessage.type) {
        case 'TIMTextElem':
          return timMessage.payload.text || '';
        case 'TIMImageElem':
          return '[图片]';
        case 'TIMSoundElem':
          return '[语音]';
        case 'TIMVideoFileElem':
          return '[视频]';
        case 'TIMFileElem':
          return '[文件]';
        default:
          return '[未知消息]';
      }
    },
    
    
    /**
     * 滚动到底部
     */
    scrollToBottom() {
      this.$nextTick(() => {
        const lastIndex = this.messages.length - 1;
        this.scrollToView = 'msg-' + lastIndex;
      });
    },
    
    /**
     * 判断是否显示时间分隔线
     */
    shouldShowTime(msg, index) {
      if (index === 0) return true;
      
      const prevMsg = this.messages[index - 1];
      const timeDiff = new Date(msg.sendTime) - new Date(prevMsg.sendTime);
      
      // 超过5分钟显示时间
      return timeDiff > 5 * 60 * 1000;
    },
    
    /**
     * 格式化消息时间（用于时间分隔线）
     */
    formatMessageTime(time) {
      const date = new Date(time);
      const now = new Date();
      const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
      const yesterday = new Date(today - 86400000);
      
      // 今天
      if (date >= today) {
        return date.toLocaleTimeString('zh-CN', {
          hour: '2-digit',
          minute: '2-digit'
        });
      }
      
      // 昨天
      if (date >= yesterday) {
        return '昨天 ' + date.toLocaleTimeString('zh-CN', {
          hour: '2-digit',
          minute: '2-digit'
        });
      }
      
      // 本周
      if (date > new Date(now - 7 * 86400000)) {
        const days = ['周日', '周一', '周二', '周三', '周四', '周五', '周六'];
        return days[date.getDay()] + ' ' + date.toLocaleTimeString('zh-CN', {
          hour: '2-digit',
          minute: '2-digit'
        });
      }
      
      // 更早
      return date.toLocaleString('zh-CN', {
        month: '2-digit',
        day: '2-digit',
        hour: '2-digit',
        minute: '2-digit'
      });
    },
    
    /**
     * 格式化时间（消息状态用）
     */
    formatTime(time) {
      const date = new Date(time);
      const now = new Date();
      const diff = now - date;
      
      if (diff < 60000) {
        return '刚刚';
      } else if (diff < 3600000) {
        return Math.floor(diff / 60000) + '分钟前';
      } else if (diff < 86400000) {
        return Math.floor(diff / 3600000) + '小时前';
      } else {
        return date.toLocaleString('zh-CN', {
          month: '2-digit',
          day: '2-digit',
          hour: '2-digit',
          minute: '2-digit'
        });
      }
    },
    
    /**
     * 预览图片
     */
    previewImage(url) {
      uni.previewImage({
        urls: [url],
        current: url
      });
    },
    
    /**
     * 返回
     */
    goBack() {
      uni.navigateBack({
        success: () => {
          // 通知消息列表页面刷新
          uni.$emit('refreshConversations');
        }
      });
    },
    
    /**
     * 显示消息操作菜单
     */
    showMessageMenu(msg, index) {
      this.selectedMessage = msg;
      this.selectedMessageIndex = index;
      this.showMessageAction = true;
      
      // 计算菜单位置
      uni.createSelectorQuery().select('.message-item').boundingClientRect(rect => {
        if (rect) {
          this.menuTop = rect.top + rect.height;
        }
      }).exec();
    },
    
    /**
     * 隐藏消息操作菜单
     */
    hideMessageMenu() {
      this.showMessageAction = false;
      this.selectedMessage = null;
      this.selectedMessageIndex = -1;
    },
    
    /**
     * 复制消息
     */
    copyMessage() {
      if (!this.selectedMessage || this.selectedMessage.messageType !== 1) {
        return;
      }
      
      uni.setClipboardData({
        data: this.selectedMessage.content,
        success: () => {
          uni.showToast({
            title: '已复制',
            icon: 'success'
          });
        }
      });
      
      this.hideMessageMenu();
    },
    
    /**
     * 判断是否可以撤回
     */
    canRecall(msg) {
      const diff = Date.now() - new Date(msg.sendTime).getTime();
      return diff < 2 * 60 * 1000; // 2分钟内可撤回
    },
    
    /**
     * 撤回消息
     */
    async recallMessage() {
      if (!this.selectedMessage) {
        return;
      }
      
      try {
        // 查找TIM消息对象
        const timMessage = await timManager.tim.findMessage(this.selectedMessage.messageId);
        
        if (timMessage) {
          await timManager.revokeMessage(timMessage);
          
          // 更新本地消息状态
          this.selectedMessage.isRecalled = true;
          this.selectedMessage.content = '你撤回了一条消息';
          
          uni.showToast({
            title: '已撤回',
            icon: 'success'
          });
        }
      } catch (error) {
        console.error('撤回失败:', error);
        uni.showToast({
          title: '撤回失败',
          icon: 'none'
        });
      }
      
      this.hideMessageMenu();
    },
    
    /**
     * 删除消息
     */
    deleteMessage() {
      if (!this.selectedMessage) {
        return;
      }
      
      uni.showModal({
        title: '确认删除',
        content: '确定要删除这条消息吗？',
        success: (res) => {
          if (res.confirm) {
            // 从列表中删除
            this.messages.splice(this.selectedMessageIndex, 1);
            uni.showToast({
              title: '已删除',
              icon: 'success'
            });
          }
        }
      });
      
      this.hideMessageMenu();
    },
    
    /**
     * 处理消息点击
     */
    handleMessageClick(msg) {
      // 如果是发送失败的消息，提示重试
      if (msg.sendStatus === 4) {
        uni.showModal({
          title: '发送失败',
          content: '消息发送失败，是否重试？',
          success: (res) => {
            if (res.confirm) {
              this.retryMessage(msg);
            }
          }
        });
      }
    },
    
    /**
     * 重试发送消息
     */
    async retryMessage(msg) {
      if (msg.messageType !== 1) {
        uni.showToast({
          title: '暂不支持重发该类型消息',
          icon: 'none'
        });
        return;
      }
      
      try {
        // 更新状态为发送中
        msg.sendStatus = 1;
        
        // 重新发送
        const message = await timManager.sendTextMessage(this.targetUserId, msg.content);
        
        // 更新消息
        const index = this.messages.findIndex(m => m.messageId === msg.messageId);
        if (index > -1) {
          this.messages[index] = this.convertMessage(message);
        }
        
        console.log('✅ 消息重发成功');
        
      } catch (error) {
        console.error('❌ 消息重发失败:', error);
        msg.sendStatus = 4;
        uni.showToast({
          title: '发送失败',
          icon: 'none'
        });
      }
    },
    
    // 其他功能方法
    switchInputType() {
      this.inputType = this.inputType === 'text' ? 'voice' : 'text';
    },
    startVoiceRecord() {
      uni.showToast({
        title: '按住说话',
        icon: 'none'
      });
    },
    stopVoiceRecord() {
      uni.showToast({
        title: '语音功能开发中',
        icon: 'none'
      });
    },
    insertEmoji(emoji) {
      this.inputText += emoji;
      this.showEmojiPanel = false;
    },
    chooseVideo() {
      uni.showToast({
        title: '视频功能开发中',
        icon: 'none'
      });
      this.showMorePanel = false;
    },
    chooseFile() {
      uni.showToast({
        title: '文件功能开发中',
        icon: 'none'
      });
      this.showMorePanel = false;
    },
    playVoice() {
      uni.showToast({
        title: '语音播放功能开发中',
        icon: 'none'
      });
    }
  }
};
</script>

<style scoped>
.chat-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background-color: #f5f5f5;
}

/* 顶部导航 */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20rpx 30rpx;
  background-color: #fff;
  border-bottom: 1px solid #e5e5e5;
}

.header-left, .header-right {
  width: 80rpx;
}

.icon-back, .icon-more {
  font-size: 40rpx;
}

.header-center {
  flex: 1;
  text-align: center;
}

.chat-title {
  display: block;
  font-size: 36rpx;
  font-weight: bold;
}

.online-status {
  display: block;
  font-size: 24rpx;
  color: #999;
  margin-top: 5rpx;
}

.online-status.online {
  color: #07c160;
}

/* 消息列表 */
.message-list {
  flex: 1;
  padding: 20rpx;
  overflow-y: scroll;
}

.loading-tip {
  text-align: center;
  padding: 20rpx;
  color: #999;
  font-size: 28rpx;
}

.message-item {
  display: flex;
  margin-bottom: 30rpx;
}

.message-item.message-self {
  flex-direction: row-reverse;
}

.avatar {
  width: 80rpx;
  height: 80rpx;
  border-radius: 8rpx;
  margin: 0 20rpx;
}

.message-content-wrapper {
  max-width: 70%;
}

.message-name {
  display: block;
  font-size: 24rpx;
  color: #999;
  margin-bottom: 10rpx;
}

.message-bubble {
  padding: 20rpx;
  border-radius: 8rpx;
  background-color: #fff;
  word-wrap: break-word;
}

.message-self .message-bubble {
  background-color: #95ec69;
}

.message-bubble.bubble-self {
  background-color: #95ec69;
}

.message-text {
  font-size: 30rpx;
  line-height: 1.5;
}

.message-image {
  max-width: 400rpx;
  border-radius: 8rpx;
}

.message-voice {
  display: flex;
  align-items: center;
  gap: 10rpx;
}

.message-video {
  width: 400rpx;
  height: 300rpx;
}

.message-recalled {
  color: #999;
  font-size: 28rpx;
}

.message-status {
  text-align: right;
  font-size: 24rpx;
  color: #999;
  margin-top: 5rpx;
}

.message-status .read {
  color: #07c160;
}

.message-status .failed {
  color: #fa5151;
}

.message-time {
  display: block;
  text-align: right;
  font-size: 22rpx;
  color: #ccc;
  margin-top: 5rpx;
}

/* 输入框 */
.input-bar {
  display: flex;
  align-items: center;
  padding: 20rpx;
  background-color: #fff;
  border-top: 1px solid #e5e5e5;
}

.input-icon {
  width: 80rpx;
  height: 80rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 50rpx;
}

.input-field {
  flex: 1;
  height: 70rpx;
  padding: 0 20rpx;
  background-color: #f5f5f5;
  border-radius: 8rpx;
  font-size: 30rpx;
}

.voice-button {
  flex: 1;
  height: 70rpx;
  line-height: 70rpx;
  background-color: #f5f5f5;
  border-radius: 8rpx;
  text-align: center;
  font-size: 30rpx;
  border: none;
}

/* 表情面板 */
.emoji-panel {
  display: flex;
  flex-wrap: wrap;
  padding: 20rpx;
  background-color: #fff;
  border-top: 1px solid #e5e5e5;
}

.emoji-item {
  width: 80rpx;
  height: 80rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60rpx;
}

/* 更多功能面板 */
.more-panel {
  display: flex;
  padding: 40rpx;
  background-color: #fff;
  border-top: 1px solid #e5e5e5;
}

.more-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 40rpx;
}

.more-icon {
  width: 100rpx;
  height: 100rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60rpx;
  background-color: #f5f5f5;
  border-radius: 16rpx;
  margin-bottom: 10rpx;
}

.more-text {
  font-size: 24rpx;
  color: #666;
}

/* 时间分隔线 */
.time-divider {
  text-align: center;
  padding: 20rpx 0;
}

.time-text {
  display: inline-block;
  padding: 8rpx 20rpx;
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 8rpx;
  font-size: 22rpx;
  color: #999;
}

/* 消息气泡失败状态 */
.bubble-failed {
  opacity: 0.6;
  border: 2rpx solid #fa5151;
}

/* 消息状态优化 */
.message-status .sending {
  color: #576b95;
}

.message-status .failed-group {
  display: flex;
  align-items: center;
  gap: 10rpx;
}

.message-status .retry-btn {
  color: #576b95;
  text-decoration: underline;
  cursor: pointer;
}

/* 消息操作菜单遮罩 */
.message-action-mask {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 消息操作菜单 */
.message-action-menu {
  width: 600rpx;
  background-color: #fff;
  border-radius: 20rpx;
  overflow: hidden;
}

.message-action-menu .menu-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15rpx;
  padding: 30rpx;
  font-size: 32rpx;
  color: #333;
  border-bottom: 1rpx solid #f0f0f0;
  transition: background-color 0.2s;
}

.message-action-menu .menu-item:active {
  background-color: #f5f5f5;
}

.message-action-menu .menu-item.cancel {
  color: #999;
  border-bottom: none;
  margin-top: 20rpx;
  border-top: 10rpx solid #f5f5f5;
}

.message-action-menu .menu-icon {
  font-size: 36rpx;
}
</style>



